Falhas do tipo CWE-122

3.735 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2026-42536HIGHApache HTTP Server: mod_xml2enc heap overflowEPSS 1.0%CVE-2025-49757HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-69845CRITICALWindows DHCP Server Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-68839CRITICALWindows USB Mass Storage Class Driver Remote Code Execution VulnerabilityEPSS 1.0%CVE-2021-42018MEDIUMA vulnerability has been identified in RUGGEDCOM i800, RUGGEDCOM i800NC, RUGGEDCOM i801, RUGGEDCOM i801NC, RUGGEDCOM i802, RUGGEDCOM i802NC,EPSS 1.0%CVE-2026-110958CRITICALWavlink WN530HG4B api.cgi heap-based overflowEPSS 1.0%CVE-2026-112393CRITICALPillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIOEPSS 1.0%CVE-2024-55627MEDIUMSuricata segfault on StreamingBufferSlideToOffsetWithRegionsEPSS 1.0%CVE-2024-30095HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-55005HIGHMicrosoft Exchange Server Remote Code Execution VulnerabilityEPSS 1.0%CVE-2023-2157MEDIUMA heap-based buffer overflow vulnerability was found in the ImageMagick package that can lead to the application crashing.EPSS 1.0%CVE-2024-3516HIGHHeap buffer overflow in ANGLE in Google Chrome prior to 123.0.6312.122 allowed a remote attacker to potentially exploit heap corruption via EPSS 1.0%CVE-2023-2905—Cesanta Mongoose MQTT Message Parsing Heap OverflowEPSS 1.0%CVE-2024-8946MEDIUMMicroPython VFS Unmount vfs.c mp_vfs_umount heap-based overflowEPSS 1.0%CVE-2026-91098HIGHHP Linux Imaging and Printing (HPLIP) Software– Multiple VulnerabilitiesEPSS 1.0%CVE-2022-0518MEDIUMHeap-based Buffer Overflow in radareorg/radare2EPSS 1.0%CVE-2026-108467HIGHMicrosoft PostScript Printer Driver Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-25172HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2026-25173HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.0%CVE-2024-38032HIGHMicrosoft Xbox Remote Code Execution VulnerabilityEPSS 1.0%